Paper-making machine.



No. 662,426. Patented Nov. 27, I900.

V. G. HAZARD.

PAPER MAKING MACHINE.

(Applica tion filed. Jan, 8, 1900.)

(No Model.)

THE mums vrrzns co, PnoTmuTncL, WASHINGTON, o. c,

{UNITED STATES arena Urricn.

VINCENT G. HAZARD, OF WILMINGTON, DELAWARE.

PAPER-MAKING MACHINE.

st mmomow forming part or Letters Patent No. 662,426, dated November 27, 1900. Application filed January 3, 1900. berial No. 211. (No model.)

To. etZZ whom it may concern.-

Be it known that I, VINCENT G. HAZARD, a citizen of the United States, residing at Wilmington, county of New Castle, and State of Delaware, have invented certain new and useful Improvements in Paper-Making Machines, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relates to certain improvements in paper-making machines.

In a certain class of paper-making machines commercially known as Yankee machines the'paper after leaving the pressrolls is acted upon by a heated drier-roll. This roll is very large, being sometimes ten feet in diameter and weighing from twelve to fifteen tons. The paper passes between this roll and one of the press-rolls, then nearly around the circumference of the drier-roll, and is finally led off to a reel. In the machines as heretofore constructed this roll has been mounted in bearings which have been caused to slide horizontally toward and from a cooperating press-roll, the bearings riding on the top of a level frame. This sliding movement has beenproduced and the amount of the movement, and consequently the pressure of the drier-roll against the cooperating press-roll, has been controlled by the mechanism which moved the bearings-such, for instance, as threaded rods or screws. With the drier-roll mounted in the manner described the pressure exerted by the said roll on the press-roll was unvarying. If, therefore, the papcrvaried'in thickness, too much or not enough pressure might be exerted on it by the drier-roll. Furthermore, if any foreign substance passed between the drier-roll and press-roll the felt passing around the press-roll was liable to injury and there was also danger of injuring the rolls themselves, as well as the parts of the machine in which they were mounted. Furthermore,the amount of adjustment necessary had to be determined by the operator of the machine and that with the greatest nicety, because the construction afforded no means by which the roll could automatically adjust itself. In this class of machines, furthermore, it has been customary to use with the drier-roll a pair of scraping-blades, which are caused to bear upon the roll just beyond the point where the paper leaves the roll, the object of these scraping-blades being to prevent the paper from sticking to orwinding upon the drier-roll in case it should break as it is being led away to the reel.

It is one of the objects of this invention to improve the construction of the class of machines heretofore referred to by so mounting the drier-roll as to permit it to havea certain degree of automatic adjustment, the roll being so mounted that it can yield when varying thicknesses of paper pass between it and the press-roll or in case any foreign substance is carried by the paper between it and the press-roll.

A further object of the invention is to so arrange the adjusting devices of the drier-roll, mounted as hereinbefore described, as to enable it to be operated either by hand or power.

A further object of the invention is to provide an improved means for mounting the scraping devices used with such drierrolls.

With these and other objects in view the invention consists in certain constructions and in certain parts, improvements, and combinations, as will be hereinafter fully described and then specifically pointed out in the claims hereunto appended In the accompanying drawings, which form a part of this specification, and in which like characters of reference indicate the same parts, Figure l is a view of one end of the paper-making machine of the type described, illustrating improved means of mounting the drier-roll. Fig. 2 is a sectional plan view of the devices for supporting the dri'er-roll. Fig. 3 isadetail sectional view taken on the line 3 3 of Fig. 1. Fig.4 isa detail sectional View taken on the line 4 4 of Fig. 2. Fig. 5 is a detail sectional View taken on the line 5 5 of Figs. 1 and 4.

Referring to the drawings, 1 indicates a portion of a frame of a paper-making machine of the class described. Suitably mounted in this frame is a pair of couch-rolls 2, which receive the paper from any suitable source of supply-as, for instance, a Fourdrinier machine. A pair of press-rolls is indicated at 3 and 4. A suitable press-felt 5 passes around the upper one of the couch-rolls 2 and the roll '3, suitable agencies being employed for conrods being engaged by nuts 18.

trolling and guiding the said felt in its move-' ment. Another felt 6 passes around the roll 4, suitable agencies being provided for guiding and controlling this felt. Inasmuch as the agencies for controlling the felts in this machine are common and well known, a description of them is unnecessary.

A large heated drier-roll, between which and the roll 3 the paper passes, is shown at 7. In the present machine this roll is mounted so as to bear against the press-roll by gravity and is therefore capable of an automatic adjustment. While the means by which the roll is mounted may be considerably varied.

in construction, the frame 1 is preferably provided with upwardly-extending supports 8, these supports being provided with tracks or guiding-rails 9. On the said guiding-rails 9 are mountedearriages 10, the said carriages being preferably provided with flanges '11, which embrace the sides of the rails 9. Pivoted in each of the carriages 10 is a swinging arm 12, the pivots 13 of said arms being pref,- erably surrounded by suitable bushings 14, to which the arms 12 are keyed. The arms 12 are provided with suitable bearings 15, in which is mounted the shaft 16 of the heated drier-roll. While the rails 9, on which the carriages 10 move, may be horizontal, if desired, they are preferably inclined slightly, as shown.

Any suitable means may be used for adjusting the carriages which control the position of the swinging arms. Preferably, however, a threaded rod 17 will be secured to each of the carriages in any suitable manner, the said The nuts 18 are connected to or formed in one piece with worm-gears 19, said gears being engaged by worms 20, which are formed on the end of a rod or shaft 21, journaled in suitable uprights on the supports 8. The rod 21 is preferably provided with a hand-wheel 22 at one end and also with a belt-pulley 23, which may be located at the opposite end, so that the shaft may be turned either by the hand-wheel or by power applied to the pulley. By this means it is possible to get a rough or coarse adj nstmer tby power applied to the pulley 23, after which a fine adjustment can be secured by turning the hand-Wheel 22.

A suitable felt 24 passes around the drier.- roll 7, as shown, any ordinary means being employed for supporting the said felt, the felt operating to snugly hold the paper against thesurface of the drier-roll.

A suitable guide 25, which is preferably in the form of a roller, is provided, said roller being journaled in the frame, and the paper is led over this guide to the reel 26, which may be mounted in suitable bearings secured to the frame.

In case the paper should break at or near the point where it should leave the drier-roll it will be seen that it might be wound upon the drier-roll. In order to prevent this, suitable scraping devices are provided, these desition with relation to the drier-roll for any,

adjustment of the said roll.

By the construction described it will-be seen that the pressure produced by the drier-roll is always constant, and yet the drier-roll is free to yield slightly, so as to accommodate itself to variations in thickness of paper or the felts or because the drier or press roll are slightly out of true and also in case any for.- eign substance is carried between the drier and press rolls by the paper, The adjustment of'the drier-roll can be also instantly and accurately controlled, and by this construction, furthermore, a skilled operator can gage the amount of pressure which the drier-roll is applying to the paper by the variation of the arms 12 from the perpendicular instead of 6- termining it experimentally by its effect upon the paper, as has been common heretofore.

The construction by which the invention is carried into effect may be considerably varied, The invention is not therefore to be limited to the precise mechanical details which are herein shown and described,

What I claim isn a p p rak g ma n h c m nation with press-roll, of a drier-roll, and meanstfor mou ting the rier-rol so that i i l b f d by gra i y a n t th p essroll, the two rolls being arrangedso that the press-roll supports'a part of the weight only of the drier-roll, substantially as described.

In a pap ak ng -chino, the mb nat on with & pr ssu of a. ie 0 1, p ir of p te a ms in hic the ier ll i mounted, the drier-roll being forced by gravity against the press-roll, the construction being such that the press-roll supports a part of the weight only of'the drier-roll and means o supp ting the arms, u st tial y as do- .Scribed,

3. In a paper-making machine, the combination with a press-roll, of a drier-roll, a pair of pivoted arms in which the drier-roll is mounted, said arms being arranged so that the drier=roll is forced by ravity against the press-roll and the press-roll bears a part of the weight only of the drier-roll, supports for the arms, and means for adjusting'said, SUP- 'po ts, bs n lly a d scribe too frame having ways in which the carriages move, and means for moving the carriages, substantially as described.

5. In a paper-making machine, the combination with a press-roll, of a drier-roll, a pair of pivoted arms in which the drierroll is mounted, said arms being arranged so that the drier-roll is forced by gravity against the press-roll and the press-roll bears a part of the weight only of the drier-roll, a pair of carriages, one for supporting each of the arms, a frame having tracks on which the carriages are mounted, a shaft, and connections between the shaft andthe carriages, and means whereby said shaft may be turned either by hand or power, substantially as described.

6. In a paper-making machine, the combination with a press-roll, of a drier-roll, a shaft on which the drier-roll is mounted, means for supporting the shaft so that the drier-roll will be forced bygravity against the press-roll and the press-roll bears a part of the weight only of the drier-roll, arms secured to the supporting means for the shaft, and suitable scraping-blades supported by the arms, substantially as described.

7. In a paper-making machine, the combination with a press-roll, of a drier-roll, a shaft on which the drier-roll is mounted, a pair of pivoted arms, bearings connected to the arms and supporting the shaft, a second pair of arms connected to the bearings, and scraping devices carried by the second pair of arms, substantially as described.

8. The combination with a press-roll, of a drier-roll, a suitable frame having tracks, carriages moving on the tracks, screws connected with the carriages, worm-gears mounted on the screws, a worm-shaft engaging the gears, means for rotating the Worm-shaft, an arm pivoted in each of the carriages, and a drierroll mounted in the arms, substantially as described.

9. The combination with a press-roll, of a drier-ro1l,a suitable frame having tracks, carriages moving on the tracks, screws connected with the carriages, worm-gears mounted on the screws, a worm-shaft engaging the gears, power and hand operated means for rotating the worm-shaft, an arm pivoted in each of the carriages, and a drier-roll mounted in the arms, substantially as described.

10. The combination with a press-roll, of a drier-ro1l,a suitable frame having tracks, carriages moving on the tracks, screws connected with the carriages, Worm-gears mounted on the screws, a worm-shaft engaging the gears, power and hand operated means for rotating the worm-shaft, an arm pivoted in each of the carriages, a drier-roll mounted in the arms, and arms carrying scraping-blades secured to the arms carrying the drier-roll, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

VINCENT G. HAZARD. Witnesses:

ENos E. THATOHER, HOWELL S. ENGLAND. 

